I>>I have a stock 2.1 watercooled engine that runs well, but consistently
>>idles at 2000 rpm. What should it idle at and how do I adjust it? I've
>>recently replaced the coil, distributor cap and rotor, plugs, wires, air
>>and fuel filters. Is this something I should just leave alone and be
>>grateful that my van is running at all?(snip)
>>*********************************************
>>
>>IMHO, First and foremost, I would look for some sort of intake vacuum leak.
>>Grab an old w!ndex bottle, and fill it with some soapy water and spray around
>>the airbox, manifolds,etc.. and see if you get a drop in the idle.

If I do have a vacuum leak, do I really want to suck water into my
combustion chambers?

I would think carb cleaner, or similar stuff would be a better choice.
<shrug>

Mark